Are there plans to support XML namespaces in the CSS3 selectors as described in http://www.w3.org/TR/2005/WD-css3-se...215/#typenmsp? This is relevant for Ajax responses that are formatted in XML, but also for the document tree in the browser, because there can be parts in other namespaces.
For this to work the Ext.DOMQuery class would need a way to declare namespace prefixes, analogous to the @namespace rules in CSS3. This way the selectors can use the prefixes defined in the application, regardless of the prefixes used in the document.
Currently the only safe way to query a DOM tree with namespaces is to strip all prefixes first. This can of course lead to local name clashes, but this is still more robust than relying on prefixes, because these can be chosen freely by a server.